1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
igomit [66]
3 years ago
6

How should i solve number 2 ?

Mathematics
1 answer:
MAXImum [283]3 years ago
6 0
X-1%x^2-2x-3 =0
X-1=0
X=1 , ≠-1 , x≠3

Answer X=1
You might be interested in
The sum of two numbers is 13 and there difference is 5 what are the 2 numbers?
Zielflug [23.3K]
X + y = 13
x - y = 5

x = (13 - y)

(13-y) - y = 5

13 - 2y = 5
-2y = -8
y = 4

x - 4 = 5
x = 9

x=9, y = 4
4 0
3 years ago
Read 2 more answers
calculate the loan for $10,000, at an annual percentage rate of 5%, for a term of 5 years. what is the amount of accrued interes
navik [9.2K]
2500$ it the interest amount for 5 years

5 0
3 years ago
Read 2 more answers
The manager of a supermarket would like to determine the amount of time that customers wait in a check-out line. He randomly sel
garri49 [273]

Complete question:

The manager of a supermarket would like to determine the amount of time that customers wait in a check-out line. He randomly selects 45 customers and records the amount of time from the moment they stand in the back of a line until the moment the cashier scans their first item. He calculates the mean and standard deviation of this sample to be barx = 4.2 minutes and s = 2.0 minutes. If appropriate, find a 90% confidence interval for the true mean time (in minutes) that customers at this supermarket wait in a check-out line

Answer:

(3.699, 4.701)

Step-by-step explanation:

Given:

Sample size, n = 45

Sample mean, x' = 4.2

Standard deviation \sigma = 2.0

Required:

Find a 90% CI for true mean time

First find standard error using the formula:

S.E = \frac{\sigma}{\sqrt{n}}

= \frac{2}{\sqrt{45}}

= \frac{2}{6.7082}

SE = 0.298

Standard error = 0.298

Degrees of freedom, df = n - 1 = 45 - 1 = 44

To find t at 90% CI,df = 44:

Level of Significance α= 100% - 90% = 10% = 0.10

t_\alpha_/_2_, _d_f = t_0_._0_5_, _d_f_=_4_4 = 1.6802

Find margin of error using the formula:

M.E = S.E * t

M.E = 0.298 * 1.6802

M.E = 0.500938 ≈ 0.5009

Margin of error = 0.5009

Thus, 90% CI = sample mean ± Margin of error

Lower limit = 4.2 - 0.5009 = 3.699

Upper limit = 4.2 + 0.5009 = 4.7009 ≈ 4.701

Confidence Interval = (3.699, 4.701)

5 0
3 years ago
Can someone help me asap please thanks
prisoha [69]
Just divide 10 by 2.5.
7 0
3 years ago
Read 2 more answers
Coach Pettaway is buying basketball equipment for his team. He gets a
soldier1979 [14.2K]
First, let’s all acknowledge that whoever comes up with problems like this WANTS kids to hate math...smh

I’m sure there is a prettier way to solve this, but here’s what I did:

8(2.25) + 3(22.50) =
18 + 67.50 = 85.50 per “set” of balls/jerseys
400/85.50 = 4.678 = number of “sets” he can buy. Round down to 4 so we have room for tax.

85.5 x 4 “sets”= $342
Tax on 342 is 0.06 x 342 = 20.52

$342 + 20.52 = $362.52 spent

Basketballs = 4 sets x 8 balls per set= 32
Jerseys = 4 sets x 3 jerseys per set= 12

32 basketballs, 12 jerseys, $362.52 spent

3 0
3 years ago
Other questions:
  • Prove: m∠LYE=180°−m of arc EHL
    8·1 answer
  • Find x if h(x)=-2<br> Please Helppp :) ill mark brainliest
    6·2 answers
  • A train is traveling at a speed of 80 km/h when the conductor applies the brakes. The train slows with a constant acceleration o
    6·1 answer
  • Inline skates are on sale for 35% off the regular price
    6·1 answer
  • Given the table of values below, which of the following ordered pairs are found on the graph of the inverse function?
    9·2 answers
  • You really want to earn an a in a class, but you still need to take one more test. suppose that your previous test scores are 85
    12·1 answer
  • 9x+y=43 <br> 4x+2y=16 using the substitution method
    10·1 answer
  • Which transformation describes the photograph? Select all that apply. The panels on the right side are a translation of those on
    15·1 answer
  • A property valued at $295,000 has a gross rent multiplier of 135. What is this property's monthly income? $2,458,$2,185,$2,525 O
    12·2 answers
  • On interstate highways, the minimum allowable lane width is 12 feet. Write an inequality to show the possible width of a lane.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!